Question

The surface area of a spere is 1018 2÷7 sq. cm what is its volume

Answer 1

Answer:

The surface area of a sphere is

1018

2

7

sq. cm. What is the volume?

Solution

Given surface area of sphere is

1018

2

7

=

7128

7

c

m

2

∴

4

π

r

2

=

7128

7

⇒

4

×

22

7

=

7128

7

⇒

r

2

=

7128

4

×

22

=

81

⇒

r

=

9

cm

So volume of sphere=

4

2

×

22

7

×

(

9

)

3

=

3054.86

c

m

3